P1BFA Buick Code - Hybrid/Electric Vehicle Battery 93 Circuit Low Voltage
Quick Answer
The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1BFA Buick indicates Hybrid/Electric Vehicle Battery 93 Circuit Low Voltage.
- Common causes
- Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1BFA Buick Description
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.
What are the Possible Causes of the DTC P1BFA Buick?
- Faulty Hybrid/Electric Vehicle Battery Pack
- Faulty Hybrid/Electric Vehicle Battery Interface Control Module
How to Fix the DTC P1BFA Buick?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1BFA Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1BFA Buick Code
What does the OBDII code P1BFA mean for a Buick?
The P1BFA code indicates a "Hybrid/Electric Vehicle Battery 93 Circuit Low Voltage," meaning an issue with the voltage in a specific battery circuit of the hybrid or electric vehicle system.
What are the common symptoms of the P1BFA code in a Buick?
Symptoms may include a check engine light, reduced fuel efficiency, decreased hybrid system performance, or the vehicle entering limp mode.
What causes the P1BFA code to appear?
Potential causes include a faulty hybrid battery module, damaged wiring or connectors in the circuit, a malfunctioning battery control module, or excessive voltage drops.
Can I drive my Buick with the P1BFA code?
It’s not recommended to drive with this code active, as it could lead to further damage to the hybrid system or leave you stranded if the system fails completely.
How is the P1BFA code diagnosed?
A technician uses a scan tool to confirm the code, inspects the hybrid battery circuits and wiring, and performs voltage and resistance tests to identify the specific fault.
What repairs can resolve the P1BFA code?
Repairs may include replacing a defective hybrid battery module, repairing or replacing damaged wiring, or reprogramming or replacing the battery control module.
How much does it cost to fix the P1BFA code?
The cost varies widely based on the specific repair, with minor wiring fixes costing a few hundred dollars and hybrid battery replacements potentially exceeding $1,000.
Can a dead 12V battery trigger the P1BFA code?
While unlikely, a weak or dead 12V battery can sometimes cause communication issues or voltage irregularities in the hybrid system, so it’s worth checking.
Will clearing the P1BFA code fix the problem?
Clearing the code without addressing the underlying issue is only a temporary solution, as the problem will likely return.
How can I prevent the P1BFA code from occurring?
Regular maintenance, inspecting the hybrid battery and its wiring for damage, and promptly addressing any warning lights can help prevent this code.
Discuss the causes and fixes for P1BFA Buick OBDII Code
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